Amplitude analysis and measurement of the time-dependent CP asymmetry of B0 → K0SK0SK0S decays

We present the first results on the Dalitz-plot structure and improved measurements of the time-dependent C P -violation parameters of the process B 0 → K 0 S K 0 S K 0 S obtained using 468 × 10 6     B ¯¯¯ B decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC....

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Detalles Bibliográficos
Autores: Garra Ticó, Jordi, Graugés Pous, Eugeni, BABAR Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/130848
Acceso en línea:https://hdl.handle.net/2445/130848
Access Level:acceso abierto
Palabra clave:Física de partícules
Experiments
Particle physics
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spelling Amplitude analysis and measurement of the time-dependent CP asymmetry of B0 → K0SK0SK0S decaysGarra Ticó, JordiGraugés Pous, EugeniBABAR CollaborationFísica de partículesExperimentsParticle physicsExperimentsWe present the first results on the Dalitz-plot structure and improved measurements of the time-dependent C P -violation parameters of the process B 0 → K 0 S K 0 S K 0 S obtained using 468 × 10 6     B ¯¯¯ B decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. The Dalitz-plot structure is probed by a time-integrated amplitude analysis that does not distinguish between B 0 and ¯¯¯ B 0 decays. We measure the total inclusive branching fraction B ( B 0 → K 0 S K 0 S K 0 S ) = ( 6.19 ± 0.48 ± 0.15 ± 0.12 ) × 10 − 6 , where the first uncertainty is statistical, the second is systematic, and the third represents the Dalitz-plot signal model dependence. We also observe evidence for the intermediate resonant states f 0 ( 980 ) , f 0 ( 1710 ) , and f 2 ( 2010 ) . Their respective product branching fractions are measured to be ( 2.70 + 1.25 − 1.19 ± 0.36 ± 1.17 ) × 10 − 6 , ( 0.50 + 0.46 − 0.24 ± 0.04 ± 0.10 ) × 10 − 6 , and ( 0.54 + 0.21 − 0.20 ± 0.03 ± 0.52 ) × 10 − 6 . Additionally, we determine the mixing-induced C P -violation parameters to be S = − 0.94 + 0.24 − 0.21 ± 0.06 and C = − 0.17 ± 0.18 ± 0.04 , where the first uncertainty is statistical and the second is systematic. These values are in agreement with the standard model expectation. For the first time, we report evidence of C P violation in B 0 → K 0 S K 0 S K 0 S decays; C P conservation is excluded at 3.8 standard deviations including systematic uncertainties.American Physical Society2019201920122019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion21 p.application/pdfhttps://hdl.handle.net/2445/130848Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1103/PhysRevD.85.054023Physical Review D, 2012, vol. 85, num. 5, p. 054023https://doi.org/10.1103/PhysRevD.85.054023(c) American Physical Society, 2012info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1308482026-05-29T05:05:01Z
dc.title.none.fl_str_mv Amplitude analysis and measurement of the time-dependent CP asymmetry of B0 → K0SK0SK0S decays
title Amplitude analysis and measurement of the time-dependent CP asymmetry of B0 → K0SK0SK0S decays
spellingShingle Amplitude analysis and measurement of the time-dependent CP asymmetry of B0 → K0SK0SK0S decays
Garra Ticó, Jordi
Física de partícules
Experiments
Particle physics
Experiments
title_short Amplitude analysis and measurement of the time-dependent CP asymmetry of B0 → K0SK0SK0S decays
title_full Amplitude analysis and measurement of the time-dependent CP asymmetry of B0 → K0SK0SK0S decays
title_fullStr Amplitude analysis and measurement of the time-dependent CP asymmetry of B0 → K0SK0SK0S decays
title_full_unstemmed Amplitude analysis and measurement of the time-dependent CP asymmetry of B0 → K0SK0SK0S decays
title_sort Amplitude analysis and measurement of the time-dependent CP asymmetry of B0 → K0SK0SK0S decays
dc.creator.none.fl_str_mv Garra Ticó, Jordi
Graugés Pous, Eugeni
BABAR Collaboration
author Garra Ticó, Jordi
author_facet Garra Ticó, Jordi
Graugés Pous, Eugeni
BABAR Collaboration
author_role author
author2 Graugés Pous, Eugeni
BABAR Collaboration
author2_role author
author
dc.subject.none.fl_str_mv Física de partícules
Experiments
Particle physics
Experiments
topic Física de partícules
Experiments
Particle physics
Experiments
description We present the first results on the Dalitz-plot structure and improved measurements of the time-dependent C P -violation parameters of the process B 0 → K 0 S K 0 S K 0 S obtained using 468 × 10 6     B ¯¯¯ B decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. The Dalitz-plot structure is probed by a time-integrated amplitude analysis that does not distinguish between B 0 and ¯¯¯ B 0 decays. We measure the total inclusive branching fraction B ( B 0 → K 0 S K 0 S K 0 S ) = ( 6.19 ± 0.48 ± 0.15 ± 0.12 ) × 10 − 6 , where the first uncertainty is statistical, the second is systematic, and the third represents the Dalitz-plot signal model dependence. We also observe evidence for the intermediate resonant states f 0 ( 980 ) , f 0 ( 1710 ) , and f 2 ( 2010 ) . Their respective product branching fractions are measured to be ( 2.70 + 1.25 − 1.19 ± 0.36 ± 1.17 ) × 10 − 6 , ( 0.50 + 0.46 − 0.24 ± 0.04 ± 0.10 ) × 10 − 6 , and ( 0.54 + 0.21 − 0.20 ± 0.03 ± 0.52 ) × 10 − 6 . Additionally, we determine the mixing-induced C P -violation parameters to be S = − 0.94 + 0.24 − 0.21 ± 0.06 and C = − 0.17 ± 0.18 ± 0.04 , where the first uncertainty is statistical and the second is systematic. These values are in agreement with the standard model expectation. For the first time, we report evidence of C P violation in B 0 → K 0 S K 0 S K 0 S decays; C P conservation is excluded at 3.8 standard deviations including systematic uncertainties.
publishDate 2012
dc.date.none.fl_str_mv 2012
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/130848
url https://hdl.handle.net/2445/130848
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.85.054023
Physical Review D, 2012, vol. 85, num. 5, p. 054023
https://doi.org/10.1103/PhysRevD.85.054023
dc.rights.none.fl_str_mv (c) American Physical Society, 2012
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2012
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 21 p.
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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